hey man, it seems you didnt fill out the best attack for for the dragon.
Might want to fix that
Left: Full Ranged Soldiers for at least two waves Max scaling ladders in each.
Center: Three tool eaters for the first three waves, full ranged or melee with max mantlets for 4th wave.

There is a way easier attack pattern. Use a 90 ranged, 110 wall (do not use less than a 50 ranged, 0 wall) commander, all 3 flanks, 3 suicide waves, then on the flanks use 20 manlets (or cast-iron manlets), and in the middle use 25 manlets and 5 rams. What troops you use for the suicide waves doesn’t matter, but in the middle use only ranged attackers (at least heavy crossbowmen, but preferably vets).
The same attack pattern also works for desert fortresses.